AIR CONDITIONING (OPTIONAL)
1B-7
SH410
ABNORMAL NOISE FROM CRANKSHAFT PULLEY
Condition
Possible Cause
Correction
A large rattling noise is heard at
idle or sudden acceleration.
Loosen pulley mounting bolt.
Worn or broken bearings
Retighten bolt.
Replace bearings.
ABNORMAL NOISE FROM TENSION PULLEY
Condition
Possible Cause
Correction
Clattering noise is heard from
pulley.
Pulley cranks upon contact.
Worn or damaged bearings.
Cracked or loose bracket.
Replace bearings.
Replace or retighten bracket.
ABNORMAL NOISE FROM EVAPORATOR
Condition
Possible Cause
Correction
Whistling sound is heard from
evaporator.
Depending on the combination of
the interior/exterior temperatures,
engine rpm and refrigerant pres-
sure, the refrigerant flowing out of
the expansion valve may, under
certain conditions, make a whis-
tling sound.
At times, slightly decreasing refrig-
erant volume may stop this noise.
Inspect expansion valve and re-
place if faulty.
ABNORMAL NOISE FROM BLOWER MOTOR
Condition
Possible Cause
Correction
Blower motor emits a chirping
sound in proportion to its speed of
rotation.
Fluttering noise or large droning
noise is heard from blower motor.
Worn or damaged motor brushes
or commutator.
Leaves or other debris introduced
from fresh air inlet to blower mo-
tor.
Repair or replace blower motor.
Remove debris and make sure
that the screen at fresh air inlet is
intact.
Содержание Zen
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